Thermostat Red Wire. Honeywell Thermostat Wiring Diagram 6 Wire Attach the Red wire to the R terminal for 24V Power Red wires are 'hot' because they connect to the power source.
What Do The Wire Colors Mean On My Thermostat at Thomas Frazier blog from loeuswbrk.blob.core.windows.net
Attach the Yellow wire to the Y terminal for AC/cooling mode Homeowners with geothermal heat pumps can disregard the orange wire
What Do The Wire Colors Mean On My Thermostat at Thomas Frazier blog
Usually, black and red wires and white wires with black or red tape indicate a "hot" wire The orange wire only applies to homeowners who have an air-source heat pump Some heat pumps or HVAC systems have separate transformers powering the heating and cooling systems
8 Wire Thermostat Wiring Color Code. You may also have Rc or Rh terminals for dual transformer systems; these are special. To help you get started, we have prepared a full thermostat wiring color code (we'll go wire-by-wire color-by-color for blue wire or black wire (C wires), orange wire, yellow wire, red wire, white wire, green wire, light blue HVAC wire, and so on).
Simple Thermostat Wiring Guide (2,3,4,5,6,7,8 Wires Color Code). It is a red wire and comes from the transformer usually located in the air handler for split systems, but you may find the transformer in the condensing unit. Some thermostats have separate Rc and R terminals.